Helper T cells are essential in determining B cell antibody class switching, in the activation and growth of cytotoxic T cells. So T helper cells regulate the activation of both cytotoxic T cells and antibody...
2 Answers · Science & Mathematics · 23/11/2007
a vaccine is a synthetic bacteria. a specific vaccine has the same structure of the bacteria that you want to be immune from. your antibodies will then record the structure of the vaccine so that when you can acquire that bacteria, your body will be able to produce...
1 Answers · Health · 22/05/2012
I'm pretty sure its mutations, mutations create the new species.
1 Answers · Health · 13/11/2011
only if it's the same strain. Usually it changes every year. They base the flu shot on the virus strain that was most popular the year before. Most of the time a new strain comes a long and the shot doesn't help as well.
5 Answers · Health · 07/07/2007
...) titers are also seen in chronic infection (and in acute infection). Only with immunity due to natural infection that has resolved, or with immunity due to immunization...
4 Answers · Health · 15/03/2014
If you have an infection, your immunity system is fighting it and your body...a larger area, get to a doctor quickly. An infection can cause a lot of damage to different parts of the body...
1 Answers · Health · 02/05/2011
Vitamin C is usually used.
5 Answers · Health · 04/04/2008